Question

An aquarium is in the form of a Dubois whose external measures are 80cm×30cm×40cm. The base, side faces and back face are to be covered with a coloured paper. Find the area of the paper needed.

PLEASE PROVIDE A WELL EXPLAINED SOLUTION.

Answer 1

Area of base=l×b=80×30=2400cm sq.
Area of side face =30×40=1200cm sq.
Area of back face=80×40=3200cm sq.
Required area =Area of base+Area of back face+2×[area of side face]
=2400+3200+2×(1200)=2400+3200+2400
=8000cm sq. answer